David Brownell <david-b@pacbell.net>:
Update two oddball NAND commands to work with {offset, length}
instead of block numbers, matching the other commands as well
as usage in U-Boot and the Linux-MTD utilities.
Document them accordingly. Update the single in-tree use of
those commands (sheevaplug).
ALSO:
(a) Document the current 2 GByte/chip ceiling for NAND chipsize.
(32 bit offset/length values can't represent 4 GBytes.) Maybe
after the upcoming release, the code can switch to 64-bits.
(b) The "nand check_bad_blocks" should report "bad" blocks. They
are not "invalid" blocks; they're "bad" ones.
(c) Tweak the "nand info" command to handle the "no arguments"
case sanely (show everything, instead of showing garbage) and
not listing the blocksize in hex kbytes (duh).
git-svn-id: svn://svn.berlios.de/openocd/trunk@1904 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
zwelch
parent
c0fc8f93f1
commit
eb385b2e70
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@ -2616,6 +2616,15 @@ boot loader, operating system, or other data needed to initialize or
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de-brick a board.
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@end enumerate
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@b{NOTE:} At the time this text was written, the largest NAND
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flash fully supported by OpenOCD is 2 GiBytes (16 GiBits).
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This is because the variables used to hold offsets and lengths
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are only 32 bits wide.
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(Larger chips may work in some cases, unless an offset or length
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is larger than 0xffffffff, the largest 32-bit unsigned integer.)
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Some larger devices will work, since they are actually multi-chip
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modules with two smaller chips and individual chipselect lines.
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@section NAND Configuration Commands
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@cindex NAND configuration
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@ -2702,9 +2711,19 @@ spare areas associated with each data page.
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@end itemize
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@end deffn
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@deffn Command {nand erase} num ...
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@deffn Command {nand erase} num offset length
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@cindex NAND erasing
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@b{NOTE:} Syntax is in flux.
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Erases blocks on the specified NAND device, starting at the
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specified @var{offset} and continuing for @var{length} bytes.
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Both of those values must be exact multiples of the device's
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block size, and the region they specify must fit entirely in the chip.
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The @var{num} parameter is the value shown by @command{nand list}.
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@b{NOTE:} This command will try to erase bad blocks, when told
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to do so, which will probably invalidate the manufacturer's bad
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block marker.
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For the remainder of the current server session, @command{nand info}
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will still report that the block ``is'' bad.
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@end deffn
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@deffn Command {nand write} num filename offset [option...]
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@ -2768,8 +2787,18 @@ the underlying driver from applying hardware ECC.
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@section Other NAND commands
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@cindex NAND other commands
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@deffn Command {nand check_bad} num ...
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@b{NOTE:} Syntax is in flux.
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@deffn Command {nand check_bad_blocks} [offset length]
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Checks for manufacturer bad block markers on the specified NAND
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device. If no parameters are provided, checks the whole
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device; otherwise, starts at the specified @var{offset} and
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continues for @var{length} bytes.
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Both of those values must be exact multiples of the device's
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block size, and the region they specify must fit entirely in the chip.
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The @var{num} parameter is the value shown by @command{nand list}.
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@b{NOTE:} Before using this command you should force raw access
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with @command{nand raw_access enable} to ensure that the underlying
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driver will not try to apply hardware ECC.
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@end deffn
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@deffn Command {nand info} num
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109
src/flash/nand.c
109
src/flash/nand.c
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@ -309,12 +309,12 @@ int nand_init(struct command_context_s *cmd_ctx)
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register_command(cmd_ctx, nand_cmd, "probe", handle_nand_probe_command, COMMAND_EXEC,
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"identify NAND flash device <num>");
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register_command(cmd_ctx, nand_cmd, "check_bad_blocks", handle_nand_check_bad_blocks_command, COMMAND_EXEC,
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"check NAND flash device <num> for bad blocks [<first> <last>]");
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"check NAND flash device <num> for bad blocks [<offset> <length>]");
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register_command(cmd_ctx, nand_cmd, "erase", handle_nand_erase_command, COMMAND_EXEC,
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"erase blocks on NAND flash device <num> <first> <last>");
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"erase blocks on NAND flash device <num> <offset> <length>");
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register_command(cmd_ctx, nand_cmd, "dump", handle_nand_dump_command, COMMAND_EXEC,
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"dump from NAND flash device <num> <filename> "
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"<offset> <size> [oob_raw|oob_only]");
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"<offset> <length> [oob_raw|oob_only]");
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register_command(cmd_ctx, nand_cmd, "write", handle_nand_write_command, COMMAND_EXEC,
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"write to NAND flash device <num> <filename> <offset> [oob_raw|oob_only|oob_softecc|oob_softecc_kw]");
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register_command(cmd_ctx, nand_cmd, "raw_access", handle_nand_raw_access_command, COMMAND_EXEC,
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@ -360,7 +360,7 @@ static int nand_build_bbt(struct nand_device_s *device, int first, int last)
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|| (((device->page_size == 512) && (oob[5] != 0xff)) ||
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((device->page_size == 2048) && (oob[0] != 0xff))))
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{
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LOG_WARNING("invalid block: %i", i);
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LOG_WARNING("bad block: %i", i);
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device->blocks[i].is_bad = 1;
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}
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else
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@ -1093,20 +1093,20 @@ static int handle_nand_info_command(struct command_context_s *cmd_ctx, char *cmd
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int first = -1;
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int last = -1;
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if ((argc < 1) || (argc > 3))
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{
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switch (argc) {
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default:
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return ERROR_COMMAND_SYNTAX_ERROR;
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}
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if (argc == 2)
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{
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case 1:
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first = 0;
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last = INT32_MAX;
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break;
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case 2:
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first = last = strtoul(args[1], NULL, 0);
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}
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else if (argc == 3)
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{
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break;
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case 3:
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first = strtoul(args[1], NULL, 0);
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last = strtoul(args[2], NULL, 0);
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break;
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}
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p = get_nand_device_by_num(strtoul(args[0], NULL, 0));
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@ -1141,7 +1141,7 @@ static int handle_nand_info_command(struct command_context_s *cmd_ctx, char *cmd
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else
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bad_state = " (block condition unknown)";
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command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%xkB) %s%s",
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command_print(cmd_ctx, "\t#%i: 0x%8.8x (%dkB) %s%s",
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j, p->blocks[j].offset, p->blocks[j].size / 1024,
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erase_state, bad_state);
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}
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@ -1203,12 +1203,31 @@ static int handle_nand_erase_command(struct command_context_s *cmd_ctx, char *cm
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p = get_nand_device_by_num(strtoul(args[0], NULL, 0));
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if (p)
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{
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int first = strtoul(args[1], NULL, 0);
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int last = strtoul(args[2], NULL, 0);
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char *cp;
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unsigned long offset;
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unsigned long length;
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if ((retval = nand_erase(p, first, last)) == ERROR_OK)
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offset = strtoul(args[1], &cp, 0);
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if (*cp || offset == ULONG_MAX || offset % p->erase_size)
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{
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command_print(cmd_ctx, "successfully erased blocks %i to %i on NAND flash device '%s'", first, last, p->device->name);
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return ERROR_INVALID_ARGUMENTS;
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}
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offset /= p->erase_size;
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length = strtoul(args[2], &cp, 0);
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if (*cp || length == ULONG_MAX || length % p->erase_size)
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{
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return ERROR_INVALID_ARGUMENTS;
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}
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length -= 1;
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length /= p->erase_size;
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retval = nand_erase(p, offset, offset + length);
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if (retval == ERROR_OK)
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{
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command_print(cmd_ctx, "successfully erased blocks "
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"%lu to %lu on NAND flash device '%s'",
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offset, offset + length, p->device->name);
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}
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else if (retval == ERROR_NAND_OPERATION_FAILED)
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{
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@ -1240,31 +1259,53 @@ int handle_nand_check_bad_blocks_command(struct command_context_s *cmd_ctx, char
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}
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if (argc == 3)
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{
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first = strtoul(args[1], NULL, 0);
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last = strtoul(args[2], NULL, 0);
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p = get_nand_device_by_num(strtoul(args[0], NULL, 0));
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if (!p) {
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command_print(cmd_ctx, "NAND flash device '#%s' is out of bounds",
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args[0]);
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return ERROR_INVALID_ARGUMENTS;
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}
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p = get_nand_device_by_num(strtoul(args[0], NULL, 0));
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if (p)
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if (argc == 3)
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{
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if ((retval = nand_build_bbt(p, first, last)) == ERROR_OK)
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char *cp;
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unsigned long offset;
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unsigned long length;
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offset = strtoul(args[1], &cp, 0);
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if (*cp || offset == ULONG_MAX || offset % p->erase_size)
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{
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command_print(cmd_ctx, "checked NAND flash device for bad blocks, use \"nand info\" command to list blocks");
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return ERROR_INVALID_ARGUMENTS;
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}
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else if (retval == ERROR_NAND_OPERATION_FAILED)
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offset /= p->erase_size;
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length = strtoul(args[2], &cp, 0);
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if (*cp || length == ULONG_MAX || length % p->erase_size)
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{
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command_print(cmd_ctx, "error when checking for bad blocks on NAND flash device");
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}
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else
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{
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command_print(cmd_ctx, "unknown error when checking for bad blocks on NAND flash device");
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return ERROR_INVALID_ARGUMENTS;
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}
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length -= 1;
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length /= p->erase_size;
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first = offset;
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last = offset + length;
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}
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retval = nand_build_bbt(p, first, last);
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if (retval == ERROR_OK)
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{
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command_print(cmd_ctx, "checked NAND flash device for bad blocks, "
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"use \"nand info\" command to list blocks");
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}
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else if (retval == ERROR_NAND_OPERATION_FAILED)
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{
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command_print(cmd_ctx, "error when checking for bad blocks on "
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"NAND flash device");
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}
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else
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{
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command_print(cmd_ctx, "NAND flash device '#%s' is out of bounds", args[0]);
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command_print(cmd_ctx, "unknown error when checking for bad "
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"blocks on NAND flash device");
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}
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return ERROR_OK;
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@ -98,7 +98,7 @@ proc sheevaplug_reflash_uboot { } {
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# reflash the u-Boot binary and reboot into it
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sheevaplug_init
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nand probe 0
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nand erase 0 0 4
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nand erase 0 0x0 0xa0000
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nand write 0 uboot.bin 0 oob_softecc_kw
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resume
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